question_answer

Some pure black mice were mistakenly mixed with hybrid black mice. The quickest way to discover whether one individual black mouse is pure is

A) To cross it with pure black mouse and all the offsprings must be black

B) To cross it with a brown mouse and all the offsprings must be black

C) To cross it with a known hybrid black mouse and all the offsprings must be black or brown mice in equal numbers

D) To cross it with a pure brown mouse and all the offsprings must be black or brown in equal numbers